1 /* 2 * This module derived from code donated to the FreeBSD Project by 3 * Matthew Dillon <dillon@backplane.com> 4 * 5 * Copyright (c) 1998 The FreeBSD Project 6 * All rights reserved. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 20 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 27 * SUCH DAMAGE. 28 * 29 * $FreeBSD: src/lib/libstand/zalloc_defs.h,v 1.6 1999/08/28 00:05:35 peter Exp $ 30 */ 31 32 #ifndef _STAND_ZALLOC_DEFS_H_ 33 #define _STAND_ZALLOC_DEFS_H_ 34 35 /* 36 * DEFS.H 37 */ 38 39 #define USEGUARD /* use stard/end guard bytes */ 40 #define USEENDGUARD 41 #define DMALLOCDEBUG /* add debugging code to gather stats */ 42 #define ZALLOCDEBUG 43 44 #include <string.h> 45 #include "stand.h" 46 47 #include "zalloc_mem.h" 48 49 #define Prototype extern 50 #define Library extern 51 52 /* 53 * block extension for sbrk() 54 */ 55 56 #define BLKEXTEND (4 * 1024) 57 #define BLKEXTENDMASK (BLKEXTEND - 1) 58 59 /* 60 * required malloc alignment. Just hardwire to 16. 61 * 62 * Note: if we implement a more sophisticated realloc, we should ensure that 63 * MALLOCALIGN is at least as large as MemNode. 64 */ 65 66 typedef struct Guard { 67 size_t ga_Bytes; 68 size_t ga_Magic; /* must be at least 32 bits */ 69 } Guard; 70 71 #define MALLOCALIGN 16 /* at least as large a sizeof(sturct Guard) */ 72 #define GAMAGIC 0x55FF44FD 73 74 #include "zalloc_protos.h" 75 76 #endif /* !_STAND_ZALLOC_DEFS_H_ */ 77